<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { watch } from 'vue'
import { ref } from 'vue'
import { userRegisterService } from '@/api/user.js'
import { userLoginService } from '@/api/user.js'
import { useUserStore } from '@/stores/user.js'
import { useRouter } from 'vue-router'
const isRegister = ref(false)
const router = useRouter()
const formModel = ref({
  username: '',
  password: '',
  repassword: '',
})

const rules = {
  username: [
    { required: true, message: '请输入用户名', trigger: 'blur' },
    //正则校验
    { pattern: /^\S{6,15}$/, message: '长度在 6 到 15 个非空字符', trigger: 'change' },
  ],
  password: [
    { required: true, message: '请输入密码', trigger: 'blur' },
    { min: 6, max: 16, message: '长度在 6 到 16 个字符', trigger: 'change' },
  ],
  repassword: [
    { required: true, message: '请再次输入密码', trigger: 'blur' },
    { min: 6, max: 16, message: '长度在 6 到 16 个字符', trigger: 'blur' },
    {
      validator: (rule, value, callback) => {
        if (value !== formModel.value.password) {
          callback(new Error('两次输入的密码不一致!'))
        } else {
          callback()
        }
      },
      trigger: 'blur'
    }
  ],
}

const form = ref(null)
const register = async () => {
  await form.value.validate()
  await userRegisterService(formModel.value)
  ElMessage.success('注册成功')
  isRegister.value = false
}

const userStore = useUserStore()

const login = async () => {
  await form.value.validate()
  const res = await userLoginService(formModel.value)
  userStore.setToken(res.data.token)
  ElMessage.success('登录成功')
  router.push('/')
}

watch(isRegister, () => {
  formModel.value = {
    username: '',
    password: '',
    repassword: '',
  }
})
</script>

<template>
  <!-- 一行分为24份 -->
  <el-row class="login-page">
    <el-col :span="12" class="bg"></el-col>
    <!-- 左边距离margin3份 -->
    <el-col :span="6" :offset="3" class="form">
      <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="formModel" :rules="rules">
        <!-- 表单的一行 -->
        <el-form-item>
          <h1>注册</h1>
        </el-form-item>

        <el-form-item prop="username">
          <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="formModel.username"></el-input>
        </el-form-item>

        <el-form-item prop="password">
          <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="formModel.password"></el-input>
        </el-form-item>

        <el-form-item prop="repassword">
          <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码" v-model="formModel.repassword"></el-input>
        </el-form-item>

        <el-form-item>
          <el-button class="button" type="primary" auto-insert-space @click="register">
            注册
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = false">
            ← 返回
          </el-link>
        </el-form-item>
      </el-form>

      <el-form :model="formModel" :rules="rules" ref="form" size="large" autocomplete="off" v-else>

        <el-form-item>
          <h1>登录</h1>
        </el-form-item>

        <el-form-item prop="username">
          <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="formModel.username"></el-input>
        </el-form-item>

        <el-form-item prop="password">
          <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码"
            v-model="formModel.password"></el-input>
        </el-form-item>

        <el-form-item class="flex">
          <div class="flex">
            <el-checkbox>记住我</el-checkbox>
            <el-link type="primary" :underline="false">忘记密码？</el-link>
          </div>
        </el-form-item>

        <el-form-item>
          <el-button class="button" type="primary" auto-insert-space @click="login" @keydown.enter="login">登录</el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = true">
            注册 →
          </el-link>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<style lang="scss" scoped>
.login-page {
  height: 100vh;
  background-color: #fff;

  .bg {
    background: url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
      url('@/assets/login_bg.jpg') no-repeat center / cover;
    border-radius: 0 20px 20px 0;
  }

  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;

    .title {
      margin: 0 auto;
    }

    .button {
      width: 100%;
    }

    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
</style>
